Currently, I have a software which able to read voltage, current, active power, apparent power and reactive power from appliances which I assume the readings should be approximately same even though I have changed the venue for setup the same appliances. But after I have moved the same setup to a different floor or a different power source, I encounter the issue of readings have apparently run out of the range from my previous reading.
Is there any cause that can make such changes?
The previous reading I get is :
After setup changed to the different place with the same appliance setup: